The problem
Pickling and galvanising produce the most concentrated salt streams in a steelworks, carrying iron, zinc, chloride and ammonium that are costly to treat and valuable to recover.
Benefits
- Recovered metals and salts instead of waste
- Less load on wastewater treatment
- Rinse water returned to the line
Application
Treats rinse and wash water from pickling and galvanising lines to recover salts and metals. Fit is assessed for each stream.
Where it sits in the steelworks
Danu Water product
Scroll sideways to see the whole process.
Shown as a standalone job for clarity. Where and how much water is taken and returned is designed around each site, and one unit may do several jobs. Powered by Danu Water's adaptive electromembrane separation.
More for steel
Application
Intake conditioning
Lowers conductivity at the primary intake, so every loop downstream has less work to do.
View detailsApplication
Scrubber loop control
Controls salt build-up in sintering, blast furnace and converter gas-scrubber loops, trimming blowdown.
View detailsApplication
Casting and rolling cooling water
Holds conductivity down in casting and rolling cooling loops, where tolerances are tightest.
View details
Could Recovery from pickling and galvanising work on your site?
Tell us about your water and we will design around your process.